cruzlink2
Grand Master
This board was sent by a member at AP forums, it keeps complaining of two bad maskroms 32y and 29y. Took the odd initially and verified them on a programmer and they checked out. Burned the two maskroms to the equivalent 27C801 and the board still saw them as bad. I traced every address line and output to two custom chips with no trace being broken. At this point I thought maybe one of the customs was bad, gave them both a good reflow. Went with a needle between every pin to check for loose pins or shots and found none. Put the maskroms back in and to my surprise the board was fixed., let her run for like 3 hours straight and she was still good.
https://x.com/Cruzlink2/status/2115717056616145233?a=urAoF1KTjvFD6aXImSg&s=19
https://x.com/Cruzlink2/status/2115717056616145233?a=urAoF1KTjvFD6aXImSg&s=19